Apache HTTP Server up to 2.4.51 mod_lua Multipart Parser r:parsebody out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$5k-$25k0.04

A vulnerability was found in Apache HTTP Server up to 2.4.51 (Web Server). It has been classified as critical. Affected is the function r:parsebody of the component mod_lua Multipart Parser. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-787. The software writes data past the end, or before the beginning, of the intended buffer. The impact remains unknown.

The weakness was shared 12/20/2021. The advisory is available at httpd.apache.org. This vulnerability is traded as CVE-2021-44790 since 12/10/2021. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 12/24/2021).

Upgrading to version 2.4.52 eliminates this vulnerability.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

NVD Base Score: 🔒

Exploitinginfo

Class: Memory corruption
CWE: CWE-787
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: HTTP Server 2.4.52

Timelineinfo

12/10/2021 CVE reserved
12/20/2021 +10 days Advisory disclosed
12/20/2021 +0 days VulDB entry created
12/24/2021 +4 days VulDB last update

Sourcesinfo

Vendor: apache.org

Advisory: httpd.apache.org
Status: Confirmed

CVE: CVE-2021-44790 (🔒)

Entryinfo

Created: 12/20/2021 03:17 PM
Updated: 12/24/2021 10:47 PM
Changes: (18) vulnerability_cvss2_nvd_basescore vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai vulnerability_cvss3_meta_basescore vulnerability_cvss3_meta_tempscore vulnerability_cvss3_nvd_basescore vulnerability_cvss3_nvd_av vulnerability_cvss3_nvd_ac vulnerability_cvss3_nvd_pr vulnerability_cvss3_nvd_ui vulnerability_cvss3_nvd_s vulnerability_cvss3_nvd_c vulnerability_cvss3_nvd_i vulnerability_cvss3_nvd_a
Complete: 🔍

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